Not trembling or shaking with fear; fearless; bold; brave; undaunted; courageous; as, an intrepid soldier; intrepid spirit.

invulnerable to fear or intimidation; "audacious explorers"; "fearless reporters and photographers"; "intrepid pioneers"

The Intrepid is a 12-metre class yacht which won the America's Cup in 1967 and again in 1970.